Global Patent Index - EP 1455298 A1

EP 1455298 A1 20040908 - Method and system for enhancing bar code reading

Title (en)

Method and system for enhancing bar code reading

Title (de)

Verfahren und Vorrichtung zum verbesserten Lesen von Barcodes

Title (fr)

Procédé et dispositif de lecture améliorée des codes à barres

Publication

EP 1455298 A1 20040908 (EN)

Application

EP 03010072 A 20030503

Priority

US 38240503 A 20030306

Abstract (en)

A method and system for enhancing measurement of a bar code or other object includes storing a pixel image containing a bar code; determining bar code orientation relative to the stored pixel image; determining a scan track through the pixel image in a succession of pixel to pixel scan paths; determining the angle of each scan path relative to the bar code orientation; and adjusting the number of virtual pixels added to each scan path as a function of the scan path angle and the bar code orientation for equalizing the lengths, measured in pixels, of the scan paths though they are of different actual lengths due to differences in scan path angles. <IMAGE>

IPC 1-7

G06K 9/20; G06K 7/10

IPC 8 full level

G06K 7/14 (2006.01); G06V 10/22 (2022.01)

CPC (source: EP US)

G06K 7/14 (2013.01 - EP US); G06K 7/1456 (2013.01 - EP US); G06K 7/1465 (2013.01 - EP US); G06K 7/1491 (2013.01 - EP US); G06V 10/22 (2022.01 - EP US)

Citation (search report)

  • [A] US 6332574 B1 20011225 - SHIGEKUSA HISASHI [JP], et al
  • [A] US 5774585 A 19980630 - HAERING FRANZ [DE]
  • [A] EP 0880103 A2 19981125 - UNITED PARCEL SERVICE INC [US]
  • [A] BECKERS A L D ET AL: "OPTIMIZATION OF LENGTH MEASUREMENTS FOR ISOTROPIC DISTANCE TRANSFORMATIONS IN THREE DIMENSION", CVGIP IMAGE UNDERSTANDING, ACADEMIC PRESS, DULUTH, MA, US, vol. 55, no. 3, 1 May 1992 (1992-05-01), pages 296 - 306, XP000332464, ISSN: 1049-9660

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1455298 A1 20040908; EP 1455298 B1 20051026; AT E308082 T1 20051115; DE 60302038 D1 20051201; DE 60302038 T2 20060713; DK 1455298 T3 20060206; ES 2251643 T3 20060501; US 2004175052 A1 20040909; US 7212682 B2 20070501

DOCDB simple family (application)

EP 03010072 A 20030503; AT 03010072 T 20030503; DE 60302038 T 20030503; DK 03010072 T 20030503; ES 03010072 T 20030503; US 38240503 A 20030306